Attachment for drilling or reaming channeled bars, angle-iron, &amp;c.



No. 793,146. PATENTED JUNE 27, 1905. J. J. NOLAN.

G OR RBAMING CHANNELED BARS, ANGLE ATTACHMENT FOR DRTLLTN APPLIUATION FILED MAR. 19. 1904.

IRNS

nunfor UNITED STATES Patented June 27', 1905.

PATENT OFFICE.

ATTACHMENT FOR DRILLING 0R REAMING CHANNELED BARS, ANGLE-IRONS, &c.

SPECIFICATION forming part of Letters Patent No. 793,146, dated June 27, 1905.

Application tiled March 19, 1904. Serial No. 198,962.

T0 all 'wh/mt 'if 11m/y concern.-

Be it known that l, JOHN J. NOLAN, acitizen of the United States, residing' in the boi'oug'li of Brooklyn, in the countyof kings and State of New York, have invented a new and useful Improvement in Attachments `for Drilling or Reaming Channeled Bars, Angle-Irons, and the Like, of which the following is a specilication.

It has heretofore been the practice for the most part in stiuctui'al-ii'on woi'k involving' the assembling of angle-irons, channeled bai's, and the like to drill the holes tliei'ein prior to the assembling' and thereafter to assemble the structural-metal work can be readily i'eaiiied, so as to correspond in position.

To the above ends iny invention consists of a novel construction of drilling'oi' reaming' attachment for use in places inaccessible to `di'ills or reaniers of the usual or ordinary construction.

lt fui'thei' consists in a novel construction of bracket forsuppoi'ting'di'illing oi' i'eaming' apparatus and in means for readily detaching' or disconnecting the same at the desired point.

It fiii'tliei' consists of novel features of construction, all as will be hereinafter set forth.

Figure 1 represents a side elevation of my di'illing' or i'eaming apparatus embodying' my invention. Fig. Z represents a perspective view of the supporting-bi'acket employed, the same being' shown in detached position. Fig. 3 represents a sectional view of a portion of structural metal woi'k after having been i'eaiiied by my invention. Fig. 1 represents a partial sectional view and partial side elevation of certain of the parts seen in Fig'. 1, the same being' on a reduced scale. Fig'. 5 repi'esents a sectional view of a portion of structural work, showing' the position of the rivet therein in case my invention had not been applied tliei'eto. Fig. 6 represents a section on line m u', Fig'.

Similar numerals of refei'cnce indicate corresponding' parts in the ligures.

Referring' to the drawings, 1 designates a spindle having' a flattened portion or tong'ue 2, which is adapted to be engaged by the chuck 3 of any of the well-known rotary ino- -toi's so universally employed at the pi'esent time, as compressed-air motors, Jfor drilling', reaniin'g, or other purposes.

The spindle l is rotatably mounted in the sleeve 4, which forms a beai'ing' for said spindle and which is seciii'ed in the opening' 5 of the boss 6, which depends from the bi'acket 7, which consists of the plate 8, having' the laterally-projecting' members 9 and the upwardly-projecting portions 10, through which pass the set-screws 11, which ai'e adapted to engage a strip 12, which beai's upon the innei' surface of the anglc-iron or channel-bar 13.

14 designates a set-screw passing' through the member 9 of the bracket 7 and adapted to eng'age the strip 15, which contacts with the under side of the flange or inenibei' 13, it being understood fi'om Fig'. 2 that tlieiiiembei's 9 and l() are preferably eonsti'ucted in pairs.

The iippei' part of the plate or body poi'- tioii 8 is provided with the eai's 16, having holes 17 therethrough, in which is located the shaft 18, upon which the cani ineiiibei' 19 is mounted or constructed, said cani being' operated by means of the handle 20.

The sleeve 1 has the arm 2l projecting therethrough, in the upper portion of which is a bearing' for the geai' 22, which latter is thereby oliset Vfrom the line of the spindle l. The gear 22 carries or has attached thereto the reamer, drill, or other implement 23, said g'ear 22 being' operated by means of the gear 21, which is carried upon theextremity of the spindle l, it being apparent that the spindle, gears 2st. and 22, and the i'eaiiiei' or other tool 23 i'otatc in unison upon the application of power to the bit or tongue 2. The g'ear 22 may be held in position with respect to its bearing' by the ai'ni 21 by airvsuitable means; but 1 preferably show the saine as formed with an extension 25, which sei'vcs as a bear- IOO ing and has the threaded portion 26, upon which the nut or collar 27 is screwed, whereby the parts are readily held in assembled position.

In Figs. 1 and 5 I have shown my device as applicable to a channel-bar, consisting of the web 28, having the danges 29 and 13. The bracket 7 is readily attached to one of the flanges, as 13, by means of the set-screws 11 and 111, and is held in position by the proper manipulation of the cam 19, which is edected by the handle 20.

In Figs. 1, 5, and 6 I have shown the position which the parts are liable to assume if assembled and riveted without the alining holes being first rearned according to my improvement. It will be apparent, however, that the parts being in the position shown in Fig. 1 and a compressed-air motor of suitable construction being applied to the bit 2 and the spindle 1 being caused to rotate and pressure being imparted thereto in the direction ofthe arrow a the spindle 1, the gears 24 and 22, and the reamer 23 will be simultaneously rotated and advanced and the riveted holes in the contiguous members 29, 80, and 31 will be reamed so as to appear as seen in Fig. 3, whereupon the rivet can thereafter be readily headed and secured in position.

It will of course be understood that the sleeve 4 is provided with a groove with which engages the spline 32 in the hub 6, whereby the sleeve 4L and its adjuncts may be advanced or retracted, as desired. lt will also be seen that by reason of the adjustability of the setscrews 14 and of the cam 19 the device may have a slight vertical adjustment to properly center the tool 23 in the holes to be reamed.

It is evident that by the word drill or its equivalent wherever used I include a reamer of any desired form, as, indeed, the attachment will largely be used with the latter tool. It is also clear that a countersink may be substituted for the drill or reamer whenever required.

It is evident thatvarious changes may be made by those skilled in the art which will come within the scope of my invention, and I do not, therefore, desire to be limited in every instance to the exact construction herein shown and described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A drilling attachment comprising a rotary spindle, a bearingin which said spindle is mounted, an odset on said bearing, intermeshing gears mounted on said spindle and in said odset and tool-receiving means operatively connected with the odset gear in combination with supporting means in which said bearing is longitudinally movable.

2. In adrill attachment, the combination of a rotary spindle, a bearing in which said spindle is mounted, an odset on said bearing, intermeshing gears on said spindle and in said odset, means for holding a tool in the odset gear and means for supporting said bearing from the work to be operated upon, and allowing longitudinal but preventing angular movement of said bearing in the supporting means.

3. A drilling attachment comprising a rotary spindle, a bearing in which said spindle is mounted, an odset on said bearing, intermeshing gears mounted on said spindle and in said odset, tool-receiving means operatively connected with the odset gear, a bracket detachably engageable with the work to be operated upon said bearing being mounted to move longitudinally in the bracket and means in said bracket for preventing other than longitudinal movement of said bearing with respect thereto.

4. Adrillingattachmentcomprisingarotary spindle, a sleeve in which said spindle is mounted, an odset on said sleeve, intermeshing gears mounted on said spindle and in said odset, tool-receiving means in the odset gear, a bracket detachably engageable with the work to be operated upon, a boss on said bracket having a cylindric opening adapted to receive said sleeve and a spline common to said sleeve f and said boss to prevent their relative rotation.

5. A drilling attachment adapted for operating on one flange of achannel-bar or the like, comprisinga rotary spindle, a bearing for said spindle, tool-holding means operatively connected to said spindle and odset therefrom to pass betweenthe flanges and a bracket adapted to engage with the other flange of said bar and to form a guide for said bearing.-

6. A bracket for a drilling attachment comprising a body, a hollow boss, means for detachably and adjustably engaging said body with Opposite sides of the bar or like member to be operated upon and means in said boss for preventing other than longitudinal movement of the drilling attachment therethrough.

7. A bracket foradrilling attachment comprising a body constructed to bear against and partially surround the iiange'of a bar to be operated upon, set-screws at one endof said body adapted to engage with an edge of said dan ge, a cam at the other end of said body adapted to engage with the opposite edge of said flange, a hollow boss adapted to receive and guide a drill-bearing and means in said boss for preventing other than longitudinal movement of the drilling attachment therethrough.

JOHN J. NOLAN.

IIO 

